Zeal Frame Breakpoints - please help

In the searches I ran I couldn't find any threads but...what are the breakpoints for zeal? Do you know where I can find a chart with the appropriate ias for the matching frame? Thanks a ton in advance.

There is no -20 base, only -10 then -30 if you are thinking that your weapon has a -20 base. Then think again plz. What you might be thinking is that you have a weapon that normaly has a speed of like 0 then it has like 20% ias. If that is what you are thinking try again.